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<html><!-- Created using the cpp_pretty_printer from the dlib C++ library. See http://dlib.net for updates. --><head><title>dlib C++ Library - any_decision_function_abstract.h</title></head><body bgcolor='white'><pre>
<font color='#009900'>// Copyright (C) 2010 Davis E. King ([email protected])
</font><font color='#009900'>// License: Boost Software License See LICENSE.txt for the full license.
</font><font color='#0000FF'>#undef</font> DLIB_AnY_DECISION_FUNCTION_ABSTRACT_H_
<font color='#0000FF'>#ifdef</font> DLIB_AnY_DECISION_FUNCTION_ABSTRACT_H_
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='any_abstract.h.html'>any_abstract.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../algs.h.html'>../algs.h</a>"
<font color='#0000FF'>namespace</font> dlib
<b>{</b>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> sample_type_,
<font color='#0000FF'>typename</font> result_type_ <font color='#5555FF'>=</font> <font color='#0000FF'><u>double</u></font>
<font color='#5555FF'>></font>
<font color='#0000FF'>class</font> <b><a name='any_decision_function'></a>any_decision_function</b>
<b>{</b>
<font color='#009900'>/*!
INITIAL VALUE
- is_empty() == true
- for all T: contains<T>() == false
WHAT THIS OBJECT REPRESENTS
This object is a version of dlib::any that is restricted to containing
elements which are some kind of function object with an operator() with
the following signature:
result_type operator()(const sample_type&) const
It is intended to be used to contain dlib::decision_function objects and
other types which represent learned decision functions. It allows you
to write code which contains and processes these decision functions
without needing to know the specific types of decision functions used.
!*/</font>
<font color='#0000FF'>public</font>:
<font color='#0000FF'>typedef</font> sample_type_ sample_type;
<font color='#0000FF'>typedef</font> result_type_ result_type;
<font color='#0000FF'>typedef</font> default_memory_manager mem_manager_type;
<b><a name='any_decision_function'></a>any_decision_function</b><font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
ensures
- this object is properly initialized
!*/</font>
<b><a name='any_decision_function'></a>any_decision_function</b> <font face='Lucida Console'>(</font>
<font color='#0000FF'>const</font> any_decision_function<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
ensures
- copies the state of item into *this.
- Note that *this and item will contain independent copies of the
contents of item. That is, this function performs a deep
copy and therefore does not result in *this containing
any kind of reference to item.
!*/</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font> <font color='#0000FF'>typename</font> T <font color='#5555FF'>></font>
<b><a name='any_decision_function'></a>any_decision_function</b> <font face='Lucida Console'>(</font>
<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
ensures
- #contains<T>() == true
- #cast_to<T>() == item
(i.e. a copy of item will be stored in *this)
!*/</font>
<font color='#0000FF'><u>void</u></font> <b><a name='clear'></a>clear</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
ensures
- #*this will have its default value. I.e. #is_empty() == true
!*/</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>></font>
<font color='#0000FF'><u>bool</u></font> <b><a name='contains'></a>contains</b> <font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#009900'>/*!
ensures
- if (this object currently contains an object of type T) then
- returns true
- else
- returns false
!*/</font>
<font color='#0000FF'><u>bool</u></font> <b><a name='is_empty'></a>is_empty</b><font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#009900'>/*!
ensures
- if (this object contains any kind of object) then
- returns false
- else
- returns true
!*/</font>
result_type <b><a name='operator'></a>operator</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font>
<font color='#0000FF'>const</font> sample_type<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#009900'>/*!
requires
- is_empty() == false
ensures
- Let F denote the function object contained within *this. Then
this function performs:
return F(item)
!*/</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>></font>
T<font color='#5555FF'>&</font> <b><a name='cast_to'></a>cast_to</b><font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
ensures
- if (contains<T>() == true) then
- returns a non-const reference to the object contained within *this
- else
- throws bad_any_cast
!*/</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>></font>
<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> <b><a name='cast_to'></a>cast_to</b><font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
<font color='#009900'>/*!
ensures
- if (contains<T>() == true) then
- returns a const reference to the object contained within *this
- else
- throws bad_any_cast
!*/</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>></font>
T<font color='#5555FF'>&</font> <b><a name='get'></a>get</b><font face='Lucida Console'>(</font>
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
ensures
- #is_empty() == false
- #contains<T>() == true
- if (contains<T>() == true)
- returns a non-const reference to the object contained in *this.
- else
- Constructs an object of type T inside *this
- Any previous object stored in this any_decision_function object is destructed and its
state is lost.
- returns a non-const reference to the newly created T object.
!*/</font>
any_decision_function<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>
<font color='#0000FF'>const</font> any_decision_function<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
ensures
- copies the state of item into *this.
- Note that *this and item will contain independent copies of the
contents of item. That is, this function performs a deep
copy and therefore does not result in *this containing
any kind of reference to item.
!*/</font>
<font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
any_decision_function<font color='#5555FF'>&</font> item
<font face='Lucida Console'>)</font>;
<font color='#009900'>/*!
ensures
- swaps *this and item
!*/</font>
<b>}</b>;
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> sample_type,
<font color='#0000FF'>typename</font> result_type
<font color='#5555FF'>></font>
<font color='#0000FF'>inline</font> <font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
any_decision_function<font color='#5555FF'><</font>sample_type,result_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> a,
any_decision_function<font color='#5555FF'><</font>sample_type,result_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> b
<font face='Lucida Console'>)</font> <b>{</b> a.<font color='#BB00BB'>swap</font><font face='Lucida Console'>(</font>b<font face='Lucida Console'>)</font>; <b>}</b>
<font color='#009900'>/*!
provides a global swap function
!*/</font>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> sample_type,
<font color='#0000FF'>typename</font> result_type
<font color='#5555FF'>></font>
T<font color='#5555FF'>&</font> <b><a name='any_cast'></a>any_cast</b><font face='Lucida Console'>(</font>
any_decision_function<font color='#5555FF'><</font>sample_type,result_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> a
<font face='Lucida Console'>)</font> <b>{</b> <font color='#0000FF'>return</font> a.cast_to<font color='#5555FF'><</font>T<font color='#5555FF'>></font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>; <b>}</b>
<font color='#009900'>/*!
ensures
- returns a.cast_to<T>()
!*/</font>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
<font color='#0000FF'>typename</font> T,
<font color='#0000FF'>typename</font> sample_type,
<font color='#0000FF'>typename</font> result_type
<font color='#5555FF'>></font>
<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> <b><a name='any_cast'></a>any_cast</b><font face='Lucida Console'>(</font>
<font color='#0000FF'>const</font> any_decision_function<font color='#5555FF'><</font>sample_type,result_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> a
<font face='Lucida Console'>)</font> <b>{</b> <font color='#0000FF'>return</font> a.cast_to<font color='#5555FF'><</font>T<font color='#5555FF'>></font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>; <b>}</b>
<font color='#009900'>/*!
ensures
- returns a.cast_to<T>()
!*/</font>
<font color='#009900'>// ----------------------------------------------------------------------------------------
</font>
<b>}</b>
<font color='#0000FF'>#endif</font> <font color='#009900'>// DLIB_AnY_DECISION_FUNCTION_ABSTRACT_H_
</font>
</pre></body></html> |